Visual Studio SerialPort

Question

I got this code from windows c#

  private void frmMain_Load(object sender, EventArgs e)
   {
        serialPort1.Open();
        if (serialPort1.IsOpen)
        {
            this.serialPort1.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(this.serialPort1_DataReceived);
        }
    }

and I am using this Converter to convert it to windows form code.

I got this code after converting it

Private Sub frmMain_Load(sender As Object, e As EventArgs)
serialPort1.Open()
If serialPort1.IsOpen Then
    Me.serialPort1.DataReceived += New System.IO.Ports.SerialDataReceivedEventHandler(Me.serialPort1_DataReceived)
End If
End Sub

but I have a problem in Me.serialPort1.DataReceived see picture below